Spring roller



c. TRAUT Dec. 12, 1933.

=; 1r when extended.

Taterite Dec. 12 1933 PATENT OFFICE UNITE'D STATES 1,9ssk129 SPRINGKOLLER Ci ifford Traut, Newport, Ky., assi'gnor to The HigginManufacturing Con1'pany, Newport, Ky., -a corporatiun of West VirginiaApplioation O ctober 29, 1928. Serial' No. 315,694 9 Claims; (GI.156-39) 4. a's' th6jTbiler is turned with the removal of thescrrariorgsigade the spring is tensioned. When -jchesoreer'i'is'released the tensioned spring auto- ;matically oauss :t11escreen to be ro11ed up on filme ;ro 1ler.

';It is the objec t ofgny invention to provide im provements in fche ioregoipg type oi spring rollers Whioh Will enfo rce asi noott rr and iessfrictional operatiori than h as hgretqfor e bee n possible and whichwill be simple :w s= 2stn i "sm i p I am ab1e to so arran thai t.h9 5. 93 0T e mi 9.

on the roller is draw-n olear np i ntofthe }ao x by the spring and hasn0t too great a tension npo i 1 In the operation of sggh a device, ifthe ends 01 the spiral springs are attaohed, as has been customary inthe past, one to an inner roher rod end the other to the tubular rollerand the convolutions extended in 730 mounting the spring so that it canbe wound p, that the force exerted. by the axia1 pull of the extendedspring will, when the spring is unwound, tend to pu1l the unattached endof toward. the end at which the spring the roller T is attached. Thisresultsin frictional wear of the operating parts of the roller,particularly at the end adjacent the fixed end 01 the spring. gIf, 011the other hand, the lengthwise thrust of t'he spring may be taken up bythe rod on which the spring is mounted, then the wear on the rolieradjacent the fixed end of the spring Will be materialiy decreased. lt isthe specifio object of my invention to so mount the spring that itslengthwise attenuation and contraction will reso1ve itself into a pu11on the mounting rod for the spring and not on the screen roller.

'I'he above and other objects to whioh reference will be made in theensuing disclosure I accomp1ish by that certain combination andarrangement of parts of which I have shown a preferred modification.

Referring to the drawingz Figure 1 is a perspective view of the assembly5 of roller rod end spring.

Figi1re 2 is a, perspective vieW from a difierent angle of the assemblyshown in Figure 51 Figure 3 is a perspective view of the ro11er and rod,with the bushing attached, showing one A type of roller mounting. Co

Figure 4 is a perspeotive view of the endof the ro11er rod, with thebushirig attached, showing another type of rol1er mounting.

Figure 5 is a perspective view of the roller rod and bushing without thespring, showing a modified arrangernent for limiting the movement of thebushing 011 the rod. y

In Fig. 3 I have shown my spring roller to be inserted into the usualcasing or box, either at the top or the bottom 0f a window. The roher 7rod has slots 13 extending into its ends for supporting it in thecasing. At one end a pin is secured within the s1ot'13 therebypreventing the rod 13 from rotating. At'the other' end a cotter pin may'be inserted in a hole extending through the rod.

T1re'ispiral spring 15 is mounted on the rod 12. .{Itone end the spring'i s secured withm an end S1ot"13f 'I1r1e" spring is' pulled outlengthwise over the rod and'its o'ther end b'e'nt'intohook shpe, asindicatod'at 16, is fastened within the bea'gi as indi oated in 'Figure3, or it may be attacheg i in a ioushing 17 Whibh has a grooved pr tion18 into -yv11ioh the exterior Wall 015 'the bead fits. In either eve rittne' spring i"s e'xtended so 5 that when it has been f u11y rivorind'u'p on the round rod that its convoiutions will bind against eachother. If the spring is notexten'ded xi1- 1y so that there is spacebetween the convolution it cannot be wound up without lengthening 9 Thebushing is slidaiole upon the rod, but is limited in its movement on therod by means of a pin, as indicated at 19 in Figure 2, o1 a flange. 19aon the rod 12 may be provided to limit the movement of the bushing onthe rod 12, as indicated in Figure 5. In either event, the springconnection is automatioally adjustable, therefore there will be 110lengthwise pu1l developed to cause a frictional binding of the end 01the ho11ow roher against the inner Wall of the casing and undue strainand wear on the operating parts of the mechanism will be avoided. Oneend of the spring will be seoured in one end of the rod and -the otherend will be secured in a bushing hold in blocked position on the samerod so that no lengthwise pu1l can be afiective on the hol1ow roller.

Having thus described my invention, what I c1aim as new and desire tosecure by Letters Patent, is:

1. In a ro11er screen, a spring tensioned roiler carrying said screen,said rolier having a rod extending therethrough, a spiral springsurrounding said rod, said spring fixed at one end to said rod andhaving a movable driving counection with said ro11er a.t its other end,blocking means for limiting the movement of said connection withrelation to said rod whereby the lengthwise impulse of said. spring willnot aflect said roller.

2. A spring roller mechanism comprising 'a. hollow roller having aninturned bead, a. spiral spring extending through said roller, a, rodwithin said spring, means forflxedly rnounting said spring a1: one ofits ends 120 said rod, means, for connecting said spring and inturnedbead at the other end of the spring, and means for limiting thecontracting movement of said spring with relation to said rod.

3. A spring roller mechanism comprising a hollow roller having aninturned bead, a spiral spring extending through said roller, a rodwithin said spring, means for non-rotatably mounting said rod, means forfiXdly mounting said spring a1; one of its ends to said rod and rneansfor connecting said spring and inturned bead at the other end cf thespring, said connecting means being slidable to a. blocked position onsaid rod. 1

4. A roller screen operating mechanism comprising a hollow roller, aroller rod, and a coiled spring fixed at one of its ends to said rodhaving a connection to ehe roller at its other end for tensioning saidroller, and means on said ro11er rod for 1irniting ehe contracti on ofsaid spring.

5. A roller screen operating mechanism comprising ahollow roller, a,ro1ler rod, and a coiled spring fixed at one of its ends 130 said rodand having a. movable connection to the roher at its other end fortensioning said roller, said cannection movable lengthwise of sa.id rod,and means on said rod for limiting the movement 015 said connection onsa.id rod.

6. In combination in a device of the character specified, a hollowroller, a. rol1er rod extending through said roller for supporting saidroller, and a spiral spring extensible lengthwise of said rod fortensioning said roller, and means for limiting the movement of saidspring on said rod.

7. In combination in a device of the character specified, a hollowroller, a roller rod extending through said roller for supporting saidroller, and a spiral spring extensible lengthwise of said r0d fortensioning said roller, said spring having a fixed connection ab one ofits ends to said roller rod, and an axial1y sliding connection With saidr oller at its other end, said connection being slidable in relation tosaid fixed nonnection.

8. In combination in a device of the character specified, a hollowroller, a, roller rod extending through said roller for supporting saidroller, and a spiral spring extended lengthwise of said rod fortensioning said roller, said spring hziving a fixed connection at one ofits ends to said rol1er rod, said roher having an inturned bead and saidspring having as 1iding connecti0n at its other end with said bead saidsliding connection being slidable in relation to said fixed Connection.

9. In combination in a device of the character specified, a hollowroller, a, rolier rod extending through said ro1ler for supporting saidroller, and a spiral spring extended lengthwise of said rod fortensioning said roller, said spring having a fixed connection ab one ofits ends to sa'id roller rod, said rol1er having an inturned bead andsaid spring having a sliding connection at its other end with said beadcomprising et bshing having a. recess which said bead engages saidbushing being slidable in relation tdsaid fixed connection.

CLIFFORD TRAUT.

